Production and Characterization of Large-Scale Recycled Newspaper Enhanced HDPE Composite Laminates

Zheng, Binwei; Guan, Lan; Zhang, Weiwei; Gu, Jin; Tu, Dengyun; Hu, Chuanshuang

doi:10.3390/polym12040851

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…Water absorption was also correlated to porosity because the pores/voids in WP-filled HDPE are known to facilitate water penetration. The second work studied the influence of stair-like and vertical splicing on the properties of the HDPE/WP-laminated composites, in which the stair-like splicing provided the optimum physicomechanical behavior as the tensile strength increased (62% for 0° stacking direction to 11.1% for 90°) [ 59 ]. In contrast, the flexural properties decreased because of the poor interaction at the splicing position.…”

Section: Waste Paper-polymeric Compositesmentioning

confidence: 99%

Waste Paper as a Valuable Resource: An Overview of Recent Trends in the Polymeric Composites Field

et al. 2023

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This review focuses on polymeric waste-paper composites, including state-of-the-art analysis with quantitative and qualitative discussions. Waste paper is a valuable cellulose-rich material, produced mainly from office paper, newspaper, and paper sludge, which can be recycled and returned to paper production or used in a new life cycle. A systematic literature review found 75 publications on this material over the last 27 years, with half of those published during the last five years. These data represent an increasing trend in the number of publications and citations that have shown an interest in this field. Most of them investigated the physicomechanical properties of composites using different contents of raw waste paper or the treated, modified, and cellulose-extracted types. The results show that polyethylene and polypropylene are the most used matrices, but polylactic acid, a biodegradable/sourced polymer, has the most citations. The scientific relevance of waste-paper composites as a subject includes the increasing trend of the number of publications and citations over the years, as well as the gaps identified by keyword mapping and the qualitative discussion of the papers. Therefore, biopolymers and biobased polymers could be investigated more, as well as novel applications. The environmental impact in terms of stability and degradation should also receive more attention regarding sustainability and life cycle analyses.

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Section: Waste Paper-polymeric Compositesmentioning

confidence: 99%

Waste Paper as a Valuable Resource: An Overview of Recent Trends in the Polymeric Composites Field

et al. 2023

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“…Currently, post-consumer PET bottles are successfully sorted and recycled with high quality, thus putting HDPE into focus [ 21 ]. Therefore, the literature shows how different types of fillers have been incorporated into HDPE to produce low cost HDPE composites, obtaining materials with improved mechanical properties and less environmental impact [ 22 , 23 , 24 ]. Most of these composites use mineral fillers [ 25 ] or fillers from agricultural waste [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

et al. 2020

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Leather buffing dust (BF) is a waste from tannery which is usually disposed on landfills. The interest in using wastes as fillers or reinforcements for composites has raised recently due to environmental concerns. This study investigates the potential use of BF waste as filler for a high density polyethylene matrix (HDPE). A series of HDPE-BF composites, containing filler concentrations ranging from 20 to 50wt%, were formulated, injection molded and tested. The effect of filler contents on the mechanical properties of the composites were evaluated and discussed. Composites with BF contents up to 30wt% improved the tensile strength and Young’s modulus of the matrix, achieving similar mechanical properties to polypropylene (PP). In the case of flexural strength, it was found to be proportionally enhanced by increasing reinforcement content, maintaining high impact strength. These composites present great opportunities for PP application areas that require higher impact resistance. The materials were submitted to a series of closed-loop recycling cycles in order to assess their recyclability, being able to maintain better tensile strength than virgin HDPE after 5 cycles. The study develops new low-cost and sustainable composites by using a waste as composite filler.

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“…As a result, the mechanical interlock of the NP fiber was weakened ( Figure 2 b,c). Research shows that the mechanical properties of the NP/HDPE composite decreased if the integrity of the NP sheets was destroyed due to excessive penetration of HDPE, confirmed via observing microstructure [ 36 ]. Therefore, with an increasing SA concentration, the tensile strength of the composite decreased gradually.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas

et al. 2021

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A high strength recycled newspaper (NP)/high density polyethylene (HDPE) laminated composite was developed using NP laminas as reinforcement and HDPE film as matrix. Herein, NP fiber was modified with stearic acid (SA) to enhance the water resistance of the NP laminas and NP/HDPE composite. The effects of heat treatment and SA concentration on the water resistance and tensile property of NP and composite samples were investigated. The chemical structure of the NP was characterized with X-ray diffractometer, X-ray photoelectron spectroscopy and attenuated total reflectance Fourier transform infrared spectra techniques. The surface and microstructure of the NP sheets were observed by scanning electron microscopy. An expected high-water resistance of NP sheets was achieved due to a chemical bonding that low surface energy SA were grafted onto the modified NP fibers. Results showed that the hydrophobicity of NP increased with increasing the stearic acid concentration. The water resistance of the composite laminates was depended on the hydrophobicity of the NP sheets. The lowest value of 2 h water absorption rate (3.3% ± 0.3%) and thickness swelling rate (2.2% ± 0.4%) of composite were obtained when the SA concentration was 0.15 M. In addition, the introduction of SA can not only enhance the water resistance of the composite laminates, but also reduce the loss of tensile strength in wet conditions, which shows potential in outdoor applications.

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Production and Characterization of Large-Scale Recycled Newspaper Enhanced HDPE Composite Laminates

Cited by 4 publications

References 19 publications

Waste Paper as a Valuable Resource: An Overview of Recent Trends in the Polymeric Composites Field

Waste Paper as a Valuable Resource: An Overview of Recent Trends in the Polymeric Composites Field

Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas

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